Crompton loom works



-(No Model.) I

3 Sheets-Sheet 1.

H. WYMAN.

V LOOM.

Patented Oct. 8, 1889.

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' 8 SheetsSheet 2. H. WYMAN;

LOOM.

Patented m. a, 1889..

N, PETERS. Pmwum her. Wuhinginn. n, c

8 Sheets--Shee.t 3.

Paten't ed Oct. 8, 1889.

WYMAN.

Y LOOM 1510. 412,689.

UNITE STAT S PATENT @FFICE.

HORACE WYMAN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE OROMPTON LOOM WORKS, OF SAME PLACE.

LOOM.

SPECIFICATION forming part of Letters Batent No. 412,689, dated ctober s, 1889.

Application filed March 9, 1889- Serial No. 302,685. (No model.)

To all whom it may concern.-

Be it known that I, HORACE WYMAN, of Worcester, county of Worcester, State of Massachusetts, have invented an Improvement in Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

In looms as now commonly made wherein eveners are employed to act upon two jacks and place the harness-frame at a common level before forming the shed, the cording connecting the jacks with the harness-frame is subjected to very considerable strain, which, besides unduly stretching the leather portions of the said cording, also results in straining the Working parts of the loom unnecessarily.

To obviate unnecessary straining of the cording as the frames are evened andjustbefore making the shed, I have added to the shedding mechanism of the loom a compensating device, herein shown as a cam, which, while thebars of the evener are in engage- I ment with both sets of jacks,and only at that time, (the jacks at such time being moved away from the .lifter preparatory to the action of the pattern-surfaceupon the jacks to select them'for the formation of afnew shed,) temporarily lessens or relieves the tension on the harness-frame cording, so that while the patness-cording will be subject to less s1 rain than it would otherwise have.

To accomplish this part of my invention I have mounted one set of the sheaves, over which runs the cording going to the harness frames, so that the said set of sheaves may obviating undue strain on the cording to permitting the particular set of sheaves shown to yield just before the formation of eachshed, for my inventionmay be practiced with any usual set of sheaves. j

Another part of my invention has to do with throwing the picking mechanism out of action automatically upon the breaking or failure of the weft-thread, as will be described.

Figure 1 is a partial left-hand side elevation of a loom embodying my improvements. Fig. 2 is apartial front elevation of the righthand end of the loom shown in Fig. 1. Fig. 3 is a sectional detail showing some of the parts employed at the left-hand end of the loom to actuate the shaft instrumental in moving the lifter and the evener-bars, most of the said parts being omitted from Fig. 1. Fig. 4 is a partial front elevation of the loom, chiefly, however, to show the manner of connecting the harness-frames and jacks, the said figurealso showing the compensating de vice referred to, part of the means for moving the lifter, and the evener-bars, and the pattern-surface; Fig. 4., a sectional detail to show the shape of the jacks, the evener and lifter being in section. Fig. 5 is a sectional detail,

looking down upon the picking shaft or cam' in the lower part of the loom, the said figure showing the devices employed for shifting the positions of the picking balls or rolls. Figs. 6, 7, 8, and 9, and 9? and 9 are details to be referred to, forming part of the said picking mechanism. Fig. 10 is a detail in plan view showing part of the breast-beam and means whereby the failure of the weft may be made to automatically operate the lever controlling the picking mechanism; Fig. 10, a detail of the latch 145 and projection 24. Fig. 11 is a detail showing part of the lay with the dagger to act upon the slide-bar shown in Figs. 1 and 10, and the sliding bar 19. Fig. 12 is a detail showing one of the links 112, intermediate the lower levers and the connectingwires. Fig. 13 is a detail showing one of the links 115. Fig. 14 shows the rocking sheave or carrying-frame. v

The loom-frame A is and may be of usual shape to sustain the working parts. The frame has suitable bearings for the pickershaft A, upon one end of which is a gear A, which in practice may have at its outer face beveled teeth to be engaged bya beveled pin ion A fast on a driving or main shaft A having at one end, any usual driving-pulley A The tooth-gear A en gages a toothed gear too A, fast on the usual crank-shaft A, the respective sizes of the said gears A and A being such as to cause the picking and crank shafts to rotate in unison, each making turn for turn alike. The usual cranks of the crankshaft receive usual connecting-rods A which are joined in usual manner to the lay A said lay in practice carrying'any usual drop-boxes. Each picker-stick Bhas its fulcrum on a like suitable stand 13, herein shown as extended from the studs forming the journals for the lay-swords. The picker-sticks are connected by usual straps and links 5 with arms B of a picker-shaft 13*, having attached to it a wing B of usual shape, which in practice will be struck at each rotation of the shafts A A by a suitable roll or ball B. The lower end of each picker-stick has attached to it any usual strap, as B and a spring, as B the spring being connected to some rigid part, as to the floor, or it may be to a projection on the framework, the spring normally acting to keep the picker-stick inits outward position. The upper part of the frame has suitable bearings for a rock-shaft 79, having at its opposite ends arms 2' and Z, each being suitably slotted for the reception of like adjustable crank pins or studs. The studs carried by the arms Z at opposite sides of the loom have connected to them suitable connecting-rods, as (i which are fitted to the ends of the evener-bar, composed, essentially, of two parallel bars m Z located at a little distance apart, but connected and always moving together. The studs of the said armsiatoppositesides of the loom have joined to them like connecting-rods c", which in turn are joined to the ends of the lifter 6 which, by the said connecting-rods, is reciprocated in suitable slots of the bracket A extended from the loom side. This bracket contains two sets of guides, as e and (1 in vertical slots of which are guided the jacks a and 6 Each jack (1 has a hook at its inner end, to which is attached the cording going to the upper side of the usual harness-frame h, a part of the said cording being composed of leather and being extended over a set of usual sheaves mounted upon a rod at the top of the loom fra'me. Each like jack b has connected to its hooked end the cording. which, as will be hereinafter described, is made to depress a harness-frame.

My invention is not limited to the specific form of jack described, and I desire to include as within the scope of my invention any usual jacks.

In this invention the cording h, extended from the jack b and adapted to be connected with the under sides of a harness-frame h, is extended over one of a series of sheaves 100, mounted upon a rod 101, carried in a movable or rocking frame 102, the said frame being shown as mounted loosely upon a rod 103, extended across the top of the loom. The said frame has, as shown, an arm 104, provided at its outer end with a roller or other stud 105, which bears upon the compensating device shown as a cam 106, herein represented as secured by a bolt 107 to one of the rocking'arms, as t, at the end of the rock-shaft 76; but in practice each arm I and 1' may have a like cam to operate against an arm like 104, having a roll 105, but at the opposite ends of the frame 102-, and cause the said sheaves 100 to move in a direction tolessen the strain on the cording, the frame herein shown moving about the center 103. separately in Fig. 14. The connections h, extended from the jacks b downwardly, have upper portions composed of leather, and their lower portions 108 composed of wire having hooks at its opposite end. The lower end of each rod 108, instead of being connected directly to the outer end of one of a series of levers 109, pivoted at 110, is connected to a thin metallic link 112, slotted at its upper ends, as at 113, (see Fig. 12,) to be engaged by the wire 108. The lower end of each link 112 may have an offset, so that the body of the link may lie in substantially the same vertical plane as the lever 109, and, as herein shown, the link has a hollow hub 112", which enters a hole in the outer end of the lever 109, where it is held by a rivet 109", which in practice will have its end upset in a countersink at one side of the said link, such construction enabling the levers to be placed much closer together than would be possible if the wire-like rods were connected directly and much wear upon the wire-like rods is ob-' viated. The inner ends of the levers 109 are connected by narrow thin links 115, having eyes at their upper and lower ends, the said eyes in turn being connected in suitable manner to the wires 116, extended up to the lower sides of the harness-frames. V

The pattern surface employed in connection with the shedding mechanism is and may be of usual constructionas, for instance, as common to United States Patent No. 264,864.

Herein the pattern-surface is shown as a chain 118, can ended over a cylinder 119, having at or near one end a gear D which is engaged by a beveled gear D (see Fig. 1) at the upper end of a vertical shaft D having suitable bearings. This shaft has splined to it a hub D having clutch-teeth at its opposite ends and an annular central groove which is embraced by a forked arm D attached to a slide-rod D having its bearings at 225. The slide-rod D at a point between its bearings, has attached to it a collar having astnd 226, (see Fig. 1,) which stud is embraced by one end of a hand-lever a (see Fig. 4,) pivoted at a. The shaft D has loose upon it at opposite sides of the said hub two beveled gears D and D", each having the inner end of its hub toothed to be engaged by one or the other end of said hubfD according to the direction in which it is desired to rotate the shaft D. By moving the hand-lever a the This cam is shown to. (See Fig. 3.)

hub D niaybe placed in central positionbe-f tween the gears D or D or be engaged with by a cranked portion of the crank-shaft A (see Fig. 3) outside the frame-work.

The devices described for actuating the pattern-surface are substantially the same as in United States Patent No. 264,864. The.

crank referred to as being carried by the crank shaft A. outside the frame-work has con nected to it a link 130, one end of which is attached to a stud of a rocking lever 131, (see Figs. 1 and 3,) an arm of the said lever having joined to it a connecting-rod 132,1vhich is extended upwardly and attached to an arm 133,,extended from the rock-shaft 7c referred Just before the protuberances of the pattern-surfaces are to act to lift the jacks preparatory to forming a shed the evener-bars m Z are moved outwardly and made to engage the outermost projections of the jacks and move them all outwardly, so as to close or even, as it is called, the shed. In their outward movement the evener-bars m Z remove the shoulders e of the jacks from contact with thelifter-bar i just before the protuberances of the pattern-surface act to distribute the jacks for a new shed, and it is at this time that the compensating device referred to arrives in the position shown in Fig. 4, where it will be seen that the roller-stud enters the depression 135 (see Fig.14) of the said compensating device, thus permitting the frame carrying the set of sheaves 100 to rock or moveand permit the sheaves to move bodily toward the jacks, thus temporarily relieving the harness-connections 72, extending to the levers 109, from what would otherwise be excessive strain, or's'train in excess of that to which they are subjected while the rollerstud travels upon the portions of the compensating device of greater radius, as when the shed is being made.

Referring to the picking mechanism, the shaft A has fastened to it near each side of the frame a hub, as r, the said hubs being rightsand left-s, according to which side of the loom they are to be placed on. Each hub has a pivot, as r, for the reception of the rollcarrier 0*, it having a hole, as T to fit the said pivot r. The roll-carrier has its outer end slotted, as shown at r Fig. 7, to receive the stud r uponwhich is mounted loosely the picking-roll B The roll-carrier has a lug, as a, which, when the loom is in regular operation and the roll is in position to strike the shoe B to effect the picking of the shuttle, engages a lug r near the end of the hub r, the engagement of the two lugs, as described, preventing twisting strain on the pivot 0". Each roll-carrier T has a finger or projec: tion, as 3, (see Fig. 9 which enters a notch 4 of a collars, loosely mounted upon the shaft A, so that the longitudinal movement of the said collar upon the said shaft will turn the carrier 0" upon its pivot r, as represented by dotted lines in Fig. 6, the carrier when in the full-line position actuating the picking-stick, the picking being suspended when the carrier is in the dotted-line position. To move these collars automatically to start or stop the picking, I have provided the loomframe at its opposite sides withlike brackets, as 8', having suitable adjustable studs 8. one of the said studs having mounted upon it a lever s and the other a lever 8 the inner ends of each of the said levers having a roll or other stud, or being forked, as best shown in Fig. 7 where the lever s is shown as partially broken off. The two levers s .9 are joined togetherby a connecting-rod s and the outer end 8 of the lever s is made to en.- ter the forked end of an upright lever 138., pivoted at 139 on the loom side. The breastbeam D (see Figs. 1 and 10) has at its inner side a bracket f, having at oneedge a projection 24, the horizontal shelf of the said bracket a projection 26, cam-shaped at its rear side, as best shown in Fig. ,11. The hand-lever 138, pivoted at. 139 and connected to the le-, ver 3 has arranged just behind it a pin or projection 141 of, an arm 1420f a rock-shaft 143, extended across theloom and provided with an arm 144, to which is jointed one end of a latch, as 145, the said latch normallyengaging the said projection 24. The latch, as shown, has a pin or projection 146, which is extended across the slide 19, so that when the latter is engaged by the usual dagger 13 common to United States Patent No. 365,012, and carried by the lay, (see Fig. 11,) the said slidereceiving upon it a slide-bar p,provided with bar as it is moved towardthe breast-beam causes the'rncline or cam 26 thereon to act on the pin 146 and remove thelatchfrom the lever 138 and turn it in a direction to stop the picking action, the lever 138 not, however, being so moved until after the weft fails.

Prior to my invention 1' am not aware that a latch has been locked in position when the loom was operated regularly, the said latch being underthe control of a spring which, as soon as the latch is released through-a dagger controlled by the feeler, causes the said spring to move the latch and connected parts to effect the automatic throwing out of action of the picking mechanism.

I have shown the rear end of the arm 142 as connected by a rod w with the lever a so that as the arm 142 is moved to actuate the lever 138 it also moves the lever a automati cally for a distance sufficient to place the hub D in central position with relation .to the.

two gears D D thus stopping the forward rotation of and leaving the pattern-surface at rest.

I am aware that in a loom having jacks connected by cording from each end to the upper and lower sides of the harness-frames a sheave has been made to act upon and tighten the cording just as the eveners act upon the jacks to even the shed prior to distributin g the jacks for a new shed, such tightening of the cording being necessary to insure the catching of a lifter and depressor upon the hooks of the jacks.

I claim 1. A harness-frame, two jacks, cording to connect one end of one of the said. jacks to the upper side of the harness-frame,a sheave to support the said cording, cording intermediate one end of the other of the said jacks and the under side of the harness-frame, and a sheave, as 100, over which the said cording is extended, combined with a movable sheavecarrying frame and with a compensating device to hold the frame against and strain the cording during the time that the shed is being formed and to move the said frame to reduce the strain on the cording when both of the said jacks are engaged by the evener, substantially as described.

2. A harness-frame, two jacks, cording to connect one end of one of the said jacks to the upper side of theharness-frame,a sheax e to support the said cording, cording intermediate one end of the other of the said jacks and the under side of the harness-frame, and a sheave, as 100, over which the said cording is extended, combined with a movable sheavecarrying frame and with a compensating device having a cam-surface to act upon a roller or other stud 105 of the said sheave-carrying frame to hold the frame against and strain the cording during the time that the shed is being formed and to move the said frame to reduce the strain on the cording when both of the said jacks are engaged by the evener, substantially as described.

3. The cross-shaft A, provided with the hubs having lugs and the roller-carrying arms pivoted thereon, and the sleeve-hubs engagin g the said roller-carrying arms loosely, combined with arms to engage the said sleeves, connections between the said arms, and a lever 138, to move the said arms to throw the rolls out of position and stop the picking, substantially as described.

4. A lever 138, to control the stopping and starting of the picking mechanism, and a latch, a projection to be engaged by and arrest the latch, a spring to normally draw the latch past the projection, and means to release the latch from the said projection, combined with means, substantially as described, between the said latch and lever, whereby when the latch is released from the projection the spring is made to move the lever 138 and stop the picking, substantially as described.

5. The lever a the clutching-hub, connections between the said lever and hub to move the latter, a latch, a projection to be engaged by and arrest the latch, a spring to normally draw the latch past the projection, and means to release the latch from the said pro jection, combined with means, substantially as described, between the said latch and 1ever, whereby when the latch is released from the projection the springis made to move the lever a and place the said hub in position to stop the forward rotation of the pattern mechanism, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HORACE WYMAN.

Witnesses:

JUSTIN A. WARE, JOHN B. SYME. 

